Watch crystal and bezel.



L. E, F. WACHTER. WATCH CRYSTAL AND BEZEL.

APPLICATION FILE D MAR. H. 1918- 8,690. Patented July 1, 1919.

1%)7763568 r I 5 vwewf o z rmm' A LOUIS E. F. WAC'HTER, OF NEW YORK, N. Y.

WATCH CRYSTAL AND BEZEL.

Specification of Letters Patent.

Patented July 1, 1919.

Original application filed October 17, 1917,, Serial No 197.006. Divided and this application filed March 11,

To all whom it may concern Be it known that I. LoUIs E. F. lVAcHTnn, a citizen. of the United States, residing in the city, county, and State of New York, have invented certain new and useful Imrovements in Vatch. Crystals and Bczels .watches, clocks or other articles where the dial must be visible and at the same time require protection, and relates in part1cular to the combination of such crystal and its supporting means usually referred to as the bezel. Instead of the use of glass for crystals, celluloid and other transparent materials are' used. and in the case of celluloid the physical characteristics of the material necessitate the methods of attachment.

Among the objects of this invention are to provide better means of overcoming the (lifliculties in attaching celluloid or like material, and to secure such by means assuring under all conditions a satisfactory joint between the transparent disk and the attaching rim under the varying conditions to which the material is subjected. I acconn plish this by making a pliable, resilient and transparent face cover, the form and construction of which are suchthat any shrinkage which might take place will not produce a loosening in the joint or permit the crystal to fall out.

The demand for non-breakable watch crystals necessitates the production of an article which will overcome all the disadvant which crystals heretofore might possess, in particular the loosening of the same from their fastenings due to shrinkage, ondugr to the character of the composition of -wh non-breakable crystals. 7

The particular species of construction to which this divisional application ad dressed, is shown in one form in the accompanying drawing, in wl'iich:

Figure 1 is a fragmentary central horizontal section or the crystal showing the same in position in the bezel with however the bezel separated from the watch case;

Serial No. 221,585. 1

F 1g. 2 is-a similar view showing however the bezel pressed down into position andpthe engages the side of the crown of the crystal.

These crystals may be fitted tight in the bezel opening, which will be done by inserting from the inside toward the outside of thebczel or the crystal may be placed in position and the bezel snapped over the flange, the upwardly curved edge of the crystal being pressed by the under portion of the bezel F, so that the flange of the crystal forms a resilient elastic joint in engagement with the surface of the dial.

Variations in the thickness and dimen sions of material become important in the new art of the use of celluloid for this purpose, and details as to these are im mrtant, but various modifications from tho particular form shown, may bc made in construe-- tion without, departing fl()ll'1'*lll l' iuvcut m.

By the practice of my invention relatively thin material may be used for the face of transparent closure, whereby the desired elasticity and spring for insertion, can be provided, and proper transparency in such materials as celluloid, assured, while the other advantageous features necessary for commercial success are accommmlatcd. In this species of my invention the elasticity and spring of the peripheral portions cooperate in making my invention most clicctire.

lVhnt- I claim and desire to secure by ters Patent is:

l. in a watch or like article a bezel. a crystal having a mtppcddaco portioin a side wall engaging the inner periphery ol the bezel and extending in a flange edge morc flexible than the face portion onga ing the under side of the bezel and the surface of the dia or adjacent watch parts. i

:2 in combination in a watch or likc article a bezel, a crystal "having a cuppedface portion merging into a thin flexible brim portion constituting the retaining edge, and engaging the under side of the bezel and the surface of the dial or adjacent Watch parts.

3. In combination in a Watch or like article, a dial, a bezel and a crystal, said crystal having a peripheral off-set from its surface terminating in a flexible flange-brim, and held between the under side of the bezel and the dial.

4. In combination in a Watch or like article, a bezel, a crystal having a face-portion the peripheral edge thereof engaging the inner periphery 0f the bezel and having a curved flange edge portionmore flexible than the face portion forming a brim and engaging the under side of the bezel and the surface of the dial or adjacent watch parts.- 20 Signed at New York, this 9th day of March 1918.

LOUIS E. F. \VACHTER. WVitnesses:

H. MUGHMoRn, HERMANN F; CUNTz. 

